EP1728574A1 - Dispositif de serrage pour machine outil - Google Patents

Dispositif de serrage pour machine outil Download PDF

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Publication number
EP1728574A1
EP1728574A1 EP06113512A EP06113512A EP1728574A1 EP 1728574 A1 EP1728574 A1 EP 1728574A1 EP 06113512 A EP06113512 A EP 06113512A EP 06113512 A EP06113512 A EP 06113512A EP 1728574 A1 EP1728574 A1 EP 1728574A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
spindle
clamping device
threaded spindle
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06113512A
Other languages
German (de)
English (en)
Other versions
EP1728574B1 (fr
Inventor
Gerhard Prischmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berg and Co GmbH
Original Assignee
Berg and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Berg and Co GmbH filed Critical Berg and Co GmbH
Priority to PL06113512T priority Critical patent/PL1728574T3/pl
Publication of EP1728574A1 publication Critical patent/EP1728574A1/fr
Application granted granted Critical
Publication of EP1728574B1 publication Critical patent/EP1728574B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/28—Chucks characterised by features relating primarily to remote control of the gripping means using electric or magnetic means in the chuck

Definitions

  • the present invention relates to a clamping device of a machine tool with an actuatable by an electric motor tensioning drive for the axial displacement of an electric motor drivable machine hollow spindle passing hollow shaft, which is mounted against rotation within the machine hollow spindle, but axially displaceable.
  • the present invention has for its object to provide a clamping device of the generic type which requires only the provision of electrical energy and in which the clamping force is practically independent of the acceleration forces of the electric motor drive the machine hollow spindle.
  • This object is achieved in that the hollow shaft via a threaded spindle axially adjustable and the threaded spindle is driven via the electric motor, whose stator is stationary and its rotating and the threaded spindle driving rotor is synchronized with the electric motor drive the machine hollow spindle.
  • the power supply to the electric motor can be done in a simple manner and without the use of slip rings.
  • the reference numeral 1 denotes a clamping device of a machine tool as a whole.
  • the clamping device 1 is equipped with an actuatable by an electric motor 2 tensioning drive for axial displacement of an electric motor driven machine hollow spindle 3 passing hollow shaft 4, wherein the hollow shaft 4 is mounted against rotation within the machine hollow spindle 3, but axially displaceable ,
  • a clamping device for receiving a workpiece or a tool with the machine hollow spindle 3 can be connected in a known and therefore not further shown manner.
  • a threaded spindle 5 For axial displacement of the hollow shaft 4 is a threaded spindle 5, which is drivable via the electric motor 2 and an intermediate gear 6.
  • the hollow shaft 4 and the threaded spindle 5 act together in principle in the manner of a threaded spindle drive, wherein the hollow shaft 4 can be regarded as a spindle nut, which is displaced axially on the threaded spindle 5 upon rotation of the threaded spindle 5 due to their non-rotating support within the machine hollow spindle 3
  • the hollow shaft 4 can be moved by the threaded spindle 5 from the drawing position of Figure 1 out both to the right and to the left in the direction of the double arrow A. This axial displacement leads to opening or closing or for tightening or loosening the mentioned, but not shown clamping device for receiving a tool or a workpiece.
  • the synchronization takes place via a controller 9, which performs a constant rotation angle comparison between the machine hollow shaft 3 on the one hand and the rotor 8 of the electric motor 2 on the other hand.
  • a first encoder 10 is provided for detecting the respective actual position value of the machine hollow spindle 3 and a second encoder 11 for detecting the respective current position actual value of the rotor 8.
  • the power supply to the stator 12 of the electric motor 2 can be varied via the controller 9 and thus synchronous operation between the threaded spindle 5 and the machine hollow spindle 3 can be achieved.
  • the controller 9 is designed so that the rotational speed of the rotor 8 of the threaded spindle 5 ultimately driving electric motor 2 can be increased or reduced briefly or for a certain number of revolutions relative to the rotational speed of the machine hollow shaft 3, so that in this case a desired axial displacement of the hollow shaft 4 takes place.
  • This design of the controller 9 makes it possible to make a workpiece or tool change even when the machine tool is running under speed.
  • the stator 13 of the electric motor 2 is arranged stationary, so that the power or energy supply to the electric motor 2 can be done easily and without the use of slip rings.
  • the axis of rotation of the electric motor 2 is aligned with the axis of rotation of the threaded spindle 5.
  • FIG. 2 shows a design corresponding in principle to FIG. 1, with the difference that the axis of rotation of the electric motor 2 is displaced parallel to the axis of rotation of the threaded spindle 5 and that a power transmission from the electric motor 2 to the threaded spindle 5 or the gear 6 preceding the threaded spindle 5 via a belt drive, preferably a toothed belt drive 14, takes place.
  • a belt drive preferably a toothed belt drive 14
  • the threaded spindle 5 can be corrected to a desired degree with respect to the desired tightening torque in order to be able to maintain this tightening torque guaranteed under the most varied operating conditions.
  • the clamping device according to the invention is characterized by a simple and sturgeon-unattractive structure and also ensures trouble-free operation, since no acceleration forces can be transmitted from the machine hollow spindle to the clamping drive by the synchronous operation of the clamping drive with the machine hollow spindle 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Turning (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP06113512A 2005-06-03 2006-05-04 Dispositif de serrage pour machine outil Not-in-force EP1728574B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06113512T PL1728574T3 (pl) 2005-06-03 2006-05-04 Uchwyt mocujący obrabiarki

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005025538A DE102005025538A1 (de) 2005-06-03 2005-06-03 Spannvorrichtung einer Werkzeugmaschine

Publications (2)

Publication Number Publication Date
EP1728574A1 true EP1728574A1 (fr) 2006-12-06
EP1728574B1 EP1728574B1 (fr) 2008-07-09

Family

ID=36808683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113512A Not-in-force EP1728574B1 (fr) 2005-06-03 2006-05-04 Dispositif de serrage pour machine outil

Country Status (6)

Country Link
EP (1) EP1728574B1 (fr)
JP (1) JP2006334776A (fr)
AT (1) ATE400386T1 (fr)
DE (1) DE102005025538A1 (fr)
ES (1) ES2309904T3 (fr)
PL (1) PL1728574T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2363223A1 (fr) * 2010-03-02 2011-09-07 Karl Hiestand Dispositif de serrage pour machines-outils
EP2542376B1 (fr) * 2010-03-02 2014-06-04 Grob-Werke GmbH & Co. KG Machine de traitement
CN103878621A (zh) * 2014-04-18 2014-06-25 沈阳第一机床厂 带线圈保护功能的机床夹具
CN105798684A (zh) * 2014-12-29 2016-07-27 山东普鲁特机床有限公司 铣头自动交换装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010007398B4 (de) 2010-02-03 2015-02-12 Hainbuch Gmbh Spannende Technik Arbeitsspindel für eine Werkzeugmaschine
DE102010007399B4 (de) 2010-02-03 2011-12-22 Hainbuch Gmbh Spannende Technik Werkstück- oder Werkzeughaltevorrichtung einer Werkzeugmaschine
DE102010007397A1 (de) 2010-02-03 2011-08-04 Hainbuch GmbH Spannende Technik, 71672 Riemenscheibe sowie Set und Arbeitsspindel mit einer Riemenscheibe
DE102010007400B4 (de) 2010-02-03 2014-02-06 Hainbuch Gmbh Spannende Technik Arbeitsspindel für eine Werkzeugmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573379A (en) * 1982-05-13 1986-03-04 Hubert Bald Apparatus for producing an adjusting torque
EP1114685A2 (fr) * 1999-12-17 2001-07-11 FUJI MACHINE Mfg. Co., Ltd. Mandrin
US6302006B1 (en) * 1998-11-02 2001-10-16 Schroeder Reinhard Machine spindle
WO2006034869A1 (fr) * 2004-09-30 2006-04-06 Cmt Tubertini Srl Equipement de commande electronique pour broches

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3366465B2 (ja) * 1994-10-12 2003-01-14 シチズン時計株式会社 コレットチャックの開閉方法とそのための装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573379A (en) * 1982-05-13 1986-03-04 Hubert Bald Apparatus for producing an adjusting torque
US6302006B1 (en) * 1998-11-02 2001-10-16 Schroeder Reinhard Machine spindle
EP1114685A2 (fr) * 1999-12-17 2001-07-11 FUJI MACHINE Mfg. Co., Ltd. Mandrin
WO2006034869A1 (fr) * 2004-09-30 2006-04-06 Cmt Tubertini Srl Equipement de commande electronique pour broches

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2363223A1 (fr) * 2010-03-02 2011-09-07 Karl Hiestand Dispositif de serrage pour machines-outils
EP2542376B1 (fr) * 2010-03-02 2014-06-04 Grob-Werke GmbH & Co. KG Machine de traitement
CN103878621A (zh) * 2014-04-18 2014-06-25 沈阳第一机床厂 带线圈保护功能的机床夹具
CN103878621B (zh) * 2014-04-18 2016-04-13 沈阳第一机床厂 带线圈保护功能的机床夹具
CN105798684A (zh) * 2014-12-29 2016-07-27 山东普鲁特机床有限公司 铣头自动交换装置

Also Published As

Publication number Publication date
DE102005025538A1 (de) 2006-12-07
PL1728574T3 (pl) 2008-12-31
JP2006334776A (ja) 2006-12-14
ES2309904T3 (es) 2008-12-16
EP1728574B1 (fr) 2008-07-09
ATE400386T1 (de) 2008-07-15

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